Module Model Guide¶

Module Numbering Rules SF32LB5x-MOD-y-AaaaBbbbCccc¶

SF: Chip series
- SiFli, company logo
32: Chip series
- 32: 32-bit MCU series
LB: Series attribute
- LB：Low-power Bluetooth MCU
- VB: Bluetooth MCU using a RISC-V processor
5: Processor series
- 5: Based on a 32-bit Arm Cortex-M33 Star-MC1 processor, or a RISC-V processor with similar computing performance
- 0: Based on a 32-bit Arm Cortex-M0+ processor
x: High-, mid-, and low-end positioning
- 8: Flagship product in the 5x series
- 6/5: Mid-range product in the 5x series
- 2: Cost-effective product in the 5x series
y: Module subcategory
- 1: Series supporting lithium battery power supply, with an onboard SF32LB525UC6/SF32LB527UD6 chip
- A: Does not support lithium battery power supply; standard 3.3V power supply series, with an onboard SF32LB52BU36/SF32LB52BU36 chip and co-packaged FLASH
- B: Does not support lithium battery power supply; standard 3.3V power supply series, with an onboard SF32LB52DUB6/SF32LB52JUD6 chip and co-packaged PSRAM

Aaaa: Variable Flash capacity
- N16：16MB QSPI-NOR Flash
- A128：128MB SPI-Nand Flash
- D128：128MB SD-Nand Flash
- E4： 4GB eMMC
Bbbb: PSRAM capacity
- R4：4MB OPI-PSRAM
- R8：8MB OPI-PSRAM
- R12：4MB+8MB OPI-PSRAM
- R16：16MB OPI/HPI-PSRAM
- R32：16+16MB HPI-PSRAM
- R64：32+32MB HPI-PSRAM
Cccc: Regularly stocked Flash capacity
- N1：1MB QSPI-NOR Flash
- N4：4MB QSPI-NOR Flash

Used to adapt to SF32LB520/3/5/7 series chips, and supports direct power supply from a lithium-ion battery
Standard configuration: SF32LB525UC6, co-packaged with 8 MB OPI-PSRAM
Chip supply voltage: 3.2–4.7 V (lithium-ion battery powered)
Other models can be customized as needed

Module code	Chip	Flash capacity	PSRAM capacity	Ambient temperature	Module dimensions (mm)
SF32LB52-MOD-1-N16R8	SF32LB525UC6	16MB QSPI-NOR	8MB OPI-PSRAM	-40~85C	18*27.9
SF32LB52-MOD-1-A128R16	SF32LB527UD6	128MB SPI-Nand	16MB OPI-PSRAM	-40~85C	18*27.9

Used to adapt to SF32LB52B series chips; lithium-ion battery power is not supported
Standard configuration: SF32LB52BU36, co-packaged with 1 MB QSPI-NOR
Chip supply voltage: 2.97–3.63 V
No NOR Flash inside the module
External NOR Flash can be connected, or external SDIO peripherals can be connected, including WiFi, SD-NAND, or eMMC (4-line mode)
Other models can be customized as needed

Module code	Chip	Flash capacity	PSRAM capacity	Ambient temperature	Module dimensions (mm)
SF32LB52-MOD-A-N1	SF32LB520U36	1MB QSPI-NOR	n/a	-40~85C	18*27.9

Module code	Chip	Flash capacity	PSRAM capacity	Ambient temperature	Module dimensions (mm)
SF32LB52-MOD-B-N16R4	SF32LB52EUB6	16MB QSPI-NOR	4MB OPI-PSRAM	-40~85C	18*27.9

Standard configuration: SF32LB566VCB36, co-packaged with dual 4+8 MB OPI-PSRAM + 1 MB QSPI-NOR
Other models can be customized as needed

Module code	Variable Flash capacity	PSRAM capacity	Regularly stocked Flash	Ambient temperature	Module dimensions (mm)
SF32LB56-MOD-N16R12N1	16MB QSPI-NOR	4+8MB OPI-PSRAM	1MB QSPI-NOR	-40~85C	18*32.9
SF32LB56-MOD-A128R12N1	128MB QSPI-NAND	4+8MB OPI-PSRAM	1MB QSPI-NOR	-40~85C	18*32.9
SF32LB56-MOD-D128R12N1	128MB SD-NAND	4+8MB OPI-PSRAM	1MB QSPI-NOR	-40~85C	18*32.9

Standard configuration: SF32LB586VDD36, co-packaged with dual 16+16 MB HPI-PSRAM + 1 MB QSPI-NOR
eMMC can be internally mounted as needed
Other models can be customized as needed

Module code	Variable Flash capacity	PSRAM capacity	Regularly stocked Flash capacity	Ambient temperature	Module dimensions (mm)
SF32LB58-MOD-N16R32N1	16MB QSPI-NOR	16+16MB HPI-PSRAM	1MB QSPI-NOR	-40~85C	24*24
SF32LB58-MOD-A128R32N1	128MB QSPI-NAND	16+16MB HPI-PSRAM	1MB QSPI-NOR	-40~85C	24*24
SF32LB58-MOD-E4R32N1	4GB eMMC	16+16MB HPI-PSRAM	1MB QSPI-NOR	-40~85C	24*24